Automatic wagon-brake



(No Model.)

\ J. S. COCHRAN.

AUTOMATIC WAGON BRAKE. No. 573,446. Patented Dee. 22, 1896.

PNOYO-LIYHG., WASHNGTON D C wz'n e S565 UNITED STATES PATENT OFFICE.

JACOB SAMUEL COCHRAN, OF SALINA, KANSAS.

AUTOMATIC WAGON-BRAKE.

SPECIFICATION forming part of Letters Patent No. 573,446, dated December `22, 1896.

Application filed March 2 5, 1 89 5.

To @ZZ whom t r11/ay concern:

Be it known that I, JACOB SAMUEL Coon- RAN, a citizen of the United States, residing at Salina, in the county of Salina and State of Kansas, have invented a new and useful Automatic Vagon-Brake, of which the following is a specification.

My invention relates to an improved automatic wagon-brake in which action is pro duced through movement of neck-yoke on front end of Wagon-ton gue in connection with levers as attached with chains, rods of iron,

and strap-links of iron; and the objects of my invent-ion are, irst, to provide an efcient i self-acting wagondorake, serviceable under all conditions of wagon use-one that is not dependent upon the wagon-body for attach` ment or operation; second, to provide a Wagon-brake appliance that energy of team hitched to the wagon causes self-adj ustment in application of the brake; third, to provide an automatic Wagon-brake that when wagonbody is in place on the wagon can be either operated by energy of team automatically or in the usual manner with hand-lever and ratchet fixed on side of wagon-body, and that may be operated by the combined energy of both team and operator. I attain these objects by the mechanism illustrated in the accompanyin gdrawin gs, in which- Figure l is a plan of my automatic wagonbrake as attached to the running-gearing of a farm-wagon. Fig.2 is a side view of my automatic brake appliance as attached and showing wagon in section with body in place on holsters. Fig. 3 is an isometrical view of levers situated over rear hounds of wagon, the tongue of wagon and connecting rods and chain over same in Figs. 1 and 2 shown broken to curtail space of drawings.

Similar numbers refer to similar parts in each igure.`

The hoop 1 and cross-bar 2 are made of iiat bar-iron forming the frame for fixed portion of the appliance, the same being bolted se` curely to rear hounds of Wagon. The Wooden lever 3 and fiat iron lever 4 are pivoted to cross-bar 2 with iron bolt and bridle-strap 10, said levers being connected to brake-beam 8 with short independent chains. The righthand end of lever 3 is connected to neck-yoke 24 by use of iron rods, strap-links, chain, and

pulley, numbered 6, 14, 16,17, 22, 23, and 25, respectively. The same end of iron lever l can be connected to hand-lever and ratchet on side of wagon-body, when desirable, with iron rod 5, which is to be detached from leverl 4 at times of using wagon with my brake Without body in place on the wagon. The lefthand end of lever 3 is connected to movable doubletree 21 by iron rod, chain, and straplink numbered 7, 15, and 20, respectively.

Fore-andaft movementof doubletree on wagon-tongue is provided by use of a slotted iron plate and open-loop-form bridle 18, admitting movement in line with tongue, and at same time avoiding end motion of doubletree through agency of draw-pin 19, which is formed with T-shaped foot having a slotted `hole through same near top end at right angle with T- foot to admit passage for iron straplink 17 through said draw-pin, which provision ad mits of introducing the T- foot of drawpin through slot in plate, (the plate being slightly blocked up from and bolted to the wagon-tongue,) swinging same one-quarter turn on long axis, slipping the doubletree 21, strap-link 20, and bridle 18 over said drawpin in place and then inserting strap-link 17 through top portion of the draw-pin in. combination of the movable doubletree device.

The connecting-rod 22, from near draw-pin 19 to chain passing over neck-yoke, is kept in line over tongue of Wagon by use of eyebolts at intervals fixed in top of tongue.

The stop for neck-yoke under tongue o Wagon is set back a distance sufficient to permit the required movement of neck-yoke backward on tongue to influence chain 23, which is connected to front side of neck-yoke 24 about pulley 25, thereby straining all connections back to and the right-hand end of lever forward, (marked 3.)

Pulley 25 is held in position over near end of tongue by a curved iron clevis 26, formed with a saddle-rest on tongue near neck-yoke and kept in position by bolt through forward arms of clevis and iron loop of wagon-tongue.

After application the position of brakebeam 8 is recovered by force of steel springs 11, fastened to said beam and acting against iron stops 12, that are riveted to sides of hoop 1, which ad mits of flexible connection between beam 8 and the levers 3 and 4, permitting ac- ICO tion of wagon-brake automatically or by handpower. Connections of leverchains to clevis of brake-beam 8 are made with eyebolts having nuts and long screw-thread for neat adjustment of length, and the said beam Sis held in position endwise on hoop 1 by staples inserted over sides of hoop up into brake beam.

Connection of chain to wooden lever 3 is made through office of a short shaft 13, having arms, one on each end, bent in opposite directions from center of shaft, the same being fixed in position with journal-bearings against back edge of lever, as most clearly shown in Fig. 3. The right-hand arm of said shaft is flattened with an eyehole receiving the first, a long curved link of chain, and standing upright when wagon-brake is at rest, at same time the arm on reverse end of shaft hangin g downright; this provision to hasten the movement of beam 8 and rubbers 9 toward rear wheels of wagon, caused by the downright arm of shaft 13 coming in contact with cross-bar 2 upon the first impulse of automatic brake to act and the consequent rocking of shaft backward, with its upper half and upright arm bringing chain and beam 8 along with said movement under influence of the team in application of the brake.

Connecting-strap 14 passes through mortise in front bolster close to right side of kingbolt. Chain 15 is kept in position where passing front end of cou pling-pole by running through a staple in left edge near end of said coupling-pole. A keyhole in strap-link 17,

just in rear of draw-pin 1f), permits keying the appliance from action at times desirable to back the team and wagon.

In action of my automatic wagon-brake, when the tendency of wagon on a decline of road is to move forward and crowd the team,

the neck-yoke 24: then being infiueneed backward on tongue of wagon and conscqu ent with attachment of lchain passing about pulley 25, and being connected along back to right end of lever 3, which is thus' brought forward, setting the brake. At same time, by virtue of reverse movement with opposite end of said lever 3 acting on pivot and the connections therefrom to draw pin 19 with slotted iron plate and loop-bridle 1S, the doubletrees 21 are moved backward on tongue of wagon a like distance to reverse movement of opposite end of lever 3. Reflex action of the brake appliance occurs the instant team is required to strain forward on doubletrees, which, by :reason of before-mentioned connections, causes reciprocate action of the brake appliance and instant freedom of rubbers 9 from wheels of wagon.

That I do claim as my invention, and desire to secure by Letters Patent, is-

1. In the combination with a wagon-brake, the hoop 1 and crossbar 2 riveted together and bolted to the rear hounds of a wagon, in the form and for the purpose substantially as described.

2. In the combination with a wagon-brake, the levers 3 and l pivoted and bridled with rod and chain connections, to act in conjunction or in dependently as described and shown.

3. In an automatic wagon-brake the combination of a slot-ted iron bed-plate and loop bridle-strap 1S with a draw-pin l0 for doubletrees having a T-shaped foot and slotted hole through same near top end as and for the purpose substantially as set fort-h.

JACOB SAMUEL COCHRAN.

Witnesses:

C. G. WILMARTH, WM. A. MARTIN. 

